I would not fret! For the first few AF I got they were spaced anywhere between 35-45 days! It really depends on the frequency of nursing. I just got my 6th postpartum AF and this was the first one that was on the money(and i was very predictable pre-baby!), but the last month my ds has not been ill or teething so nursing hadn't increased at all.

Yes - you can expect irregular cycles for awhile. I got AF back at 13 months post partum, and it never did become regular - I got pregnant at 20 months post-partum and I had only had one cycle that was back to my normal 35 days - and even then, I was a couple of days late (but wasn't pregnant).

I got it back when ds was about 15 months, and it was a little weird in terms of timing for a while. now, it arrives regularly but does weird tings wheen it gets here. I have a lot of clots (small ones, but lots) which I never had before I was pregnant. Also, it lasts about 4 days, stops for 2 or so days, and comes back on the 6th or 7th day for a day or two. Weird. I just assume it's because I'm still nursing. BTW, ds is now 2.5 years old.

mine have been off too.. I got it back at 11 months.. then got it every 2 months for a few months.. then every 2 weeks for about 2 months.. then back to every 2 months.. then got pg, miscarried & Im still getting it irregular.. I never know when to expect it :